Auger



(No Model.) 2 Sheets-Sheet 1. M. H. JONES.

AUGER.

IN VEJVTOR Patented Jan.20,1891.

4 WITNESSES (No Model.) 2 Sheets-Sheet 2. M. H. JONES. AUGER.

No. 444,956. Patented Jan. 20,1891.

WI TJV ESSES I JV VEJV TOR $W M M W M M flzrtomey UNITED STATES PATENT OFFICE.

MAURICE II. JONES, OF BALTIMORE, MARYLAND.

AUeEe.

SPECIFICATION forming part of Letters Patent No. 444,956, dated January 20, 1891.

Application filed April 29, 1890. Serial No. 349,917. (No model.)

To all whom it may concern:

Be it known that I, MAURICE H. Jones, a citizen of the United States, residing at Balti more, in the State of Maryland, have invented a certain new and useful Improvement in Angers, of which the following is a full, clear, and exact description.

This invention relates to that class of angers in which the cutting or leading lip is made removable for purposes of renewal when worn out or broken.

The invention consists in the construction of joint for uniting the removable lip to the body or barrel of the auger, the essential constituents of such joint being a tenon and socket running substantially parallel to the meeting edges of the barrel and lip and a dowel or wedge extending transversely thereof.

The invention also consists in a construction of the barrel whereby choking is prevented.

In the accompanying drawings, illustrating my invention, in the several figures of which like parts are similarly designated, Figure 1 is a side elevation of an auger embodying my invention. Fig. 2 is a perspective view of the lower end of the auger with the lip detached. Fig. 3 is a plan View of the under side of the detached lip, and Fig. 4: is a transverse section. Fig. 5 is a side View of another form of detachable lip. Fig. 6 is a perspective view of the lower part of the barrel. Fig. 7 is a plan view of the under side of the detached lip, and Fig. 8 is a sectional elevation. Fig. 9 is a side elevation of another modification; Fig. 10, a bottom plan view of the barrel with the lip removed; Fig. 11, a plan view of the removed lip; Fig. 12,a plan view of the leading screw or worm, and Fig. 13 a vertical section. Fig. 14: is a side elevation of still another form; Fig. 15, a bottom plan view of the barrel with the lip removed; Fig. 16, a plan of the removed lip, and Fig. 17 a sectional elevation. Fig. 18 is a sectional elevation of still another form; Fig. 19, a bottom plan of the barrel with the lip removed; Fig. 20, a plan of the removed lip, and Fig. 21 a sectional elevation. Fig. 22is a side elevation of still another modification; Fig. 23, a bottom plan view of the barrel with the lip removed;

Fig. 21, a plan of the removed lip; Fig. 25, a side elevation of the removed lip, and Fig. 26 a sectional elevation. Fig. 27 is a side elevation of the last form of my invention I will illustrate. Fig. 28 is a bottom plan view of the barrel with the lip removed; Fig. 29, a plan of the removed lip; Fig. 30, a sectional elevation. Fig. 31 is an elevation of the upper portion of the barrel of theauger shown in Fig. 1, the view being taken at right angles to the view 'of Fig. 1.

In order to make a successful detachable leading end or lip for angers, it is obviously necessary to 7 provide such fastenings for the lip to the barrel or body of the anger as will resist the various strains to which the lip is put in operation-that is to say, which shall meet the resistance the lip is subjected o in insertion and removal. Inasmuch as there is little space, comparatively, for extended bearings it becomes necessary to utilize that space and to supplement it in such way that the removable lip may be readily removable, and at the same time, when in place, be securely held against displacement. Now, in my invention, I have made in the lip itself and in the body of the auger itself as extended connections as the adjacent faces admit of, and these connections take on the form of tenon and socket, using these terms in a generic way, the tenon and socket extending transversely of the auger, and in addition to the tenon and socket I employ dowels, keys, or equivalent auxiliary devices which extend between the auger and the removable lip in the direction of the length of the auger.

In the forms shown in Figs. 1 to 1 the bot tom of the barrel a, is made with two dove tail tenons b and one dovetail socket c, and in addition the edge (Z of the body is undercut, as shown more particularly in Fig. 2. The removable lip a is provided With a tenon et-o engage the dovetail socket c of the auger-body, and also with dovetail sockets ff to engage the dovetail tenons b b, and the said lip is provided wit-h a transverse tenon g, which engages the transverse edge cl of the barrel, so that in this instance the lip is joined to the body by three tenons extending in one direction and a secondary tenon extending transversely thereto, thusmceting strains in these directions. But as an additional se curity, and one necessary to prevent displacement or lateral escape I employ keys or wedges or dowels, or both of them, which extend longitudinally of the auger. In the present instance I have shown dovetail keys 72. fitted in corresponding sockets h, and have also used dowels 2 driven in suitable holes 1" in the screw of the augerand the lip. These dowels and keys or wedges will have their ends clinched or sufficiently upset to be held in place, and thereafter when it is desired to remove the lip for any purpose a file may be used to take off the upset port-ions of these dowels or wedges and permit their being driven out and the detachable lip removedand a new one put in place.

' In the form of the invention shown in Figs. 5 to 8 a single transverse socket c is made in the barrel and a single transverse tenon c is made in the removable lip a. The transverse lip (Z extends only from one edge to the socket 0, while the transverse lip 9 also extends only from one edge to the tenon 0, thus making a sort of quartered joint between the body or barrel and removable lip' in addition to the tenon-and-socket joint. The longitudinal joint may be two keys 7t 7t and two dowels i 2'.

In the form of connection shown in Figs. 9 to 13 a single tenon Z) may extend nearly across the end of the barrel and the removable lip may have a single socket 0, also extending part-way across it, the wall a left in this socket co-operating with the end I) of the tenon b to form a stop or abutment. A single straight wedge or key h may be employed, and also one or more dowels t'. The leading-screw or worm j may be made with a square shank or tang j, which is fitted into a corresponding socket j made in the removable lip or anger, or both, whereby the said leading-screw or worm is held in place, and serves additionally also to secure the removable lip and auger-body together. The end j of the worm-shank may be made round where it enters'the auger-body, as shown in Figs. 12 and 13; but instead of making the leading screw or worm detachable and the cutting-lip of the shape shown the said leadin g-screw may be made integral with the cut ting-lip and the said cutting-lip made of other usual and desired form.

As shown in Figs. 14 to 17, the worm or leading-screw and the lip may be made integral and the parts connected by a tenon e and socket 0, extending across the parts at substantially right angles to the direction shown in Figs. 9 to 13. In this case a lip d will be available.

As shown in Figs. 18 to 21, the body may be made with a large tenon b and the lip made with a corresponding socket f and one or more dowels or keys employed. The socket f in the removable lip extends from one edge inwardly to the vertical wall of the floor of the lip, and the removable lip and the auger are secured by a horizontal transverse double wedge or key 1.1, fitted in corresponding grooves made in the lip in the end of the auger.

In Figs. 22 to 26 the body of the anger is pierced transversely with holes Z and m, of suitable size and shape, and are shown one as rectangular and the other as round, to receive corresponding pins Z and m, projectin from the removable lip. In addition, the end of the barrel or auger is provided with an undercut socket n, which receives a lip 11. of the removable lip; and for further security of parts the barrel is provided with a usual socket e and the lip ct with a usual tenon e, and any suitable number of dowels or pins may be employed in addition. I have shown a single-edge pin or wedge 71 The tongues Z and m and lip 42. and the tenon c in this form of the invention project at right angles and horizontally from the vertical wall of the floor-lip of the removable lip, and thus solid abutting surfaces are provided between the removable lip and the auger.

In the form shown in Figs. 27 to 30 the anger barrel or body is provided with a straight-edge tenon Z) of irregular outline, using for this purpose as much of the end of the barrel as is available, and the removable lip is provided with a corresponding socket f. The keys or wedges it h are made integral with the lip and fit corresponding longitudinal grooves in the barrel, and in order to unite the parts more firmly a central dowel i may be necessary.

Thus in all these forms it will be seen that provision is made for the greatest possible extent of connecting-surfaces integral with the barrel and the removable lip consistent with the avoidance of the impairment of the strength of the tool, and the best disposition is made of the auxiliary keys, dowels, wedges, or like fastenings. At the same time there is little or no difficulty in detaching the removable lip, when'that is necessary, and replacing it with a new one.

The final feature of my invention is the provision of means for preventing the choking of the barrel when the auger is used, particularly by unskilled hands. Frequently it happens that when avery deep hole is being bored the core after leaving the screw of the barrel becomes fouled about the shank of the auger and compacted in the bore, and so renders it a matter of very great difficulty to remove the auger. In order to overcome this difficulty, I have inserted in the screw-canal and at its uppermost part a vertical Wall 0, (shown in Figs. 1 and 31,) against which the core abuts, and so prevents its egress from the barrel. As soon as the core has compacted against this wall sufficiently to render the working of the auger appreciably hard and diffieult, then notice is thereby served upon the user of the anger that the core needs removal by withdrawing the auger, and this removal of the auger may be accomplished by simply a reversal of motion in the ordinary way.

What I claim is 1. An improvement in augers consisting in an auger barrel or body and a detachable cutting lip or edge therefor, combined with connecting mediums consisting of a suitable number of tenons and sockets extending transversely of the barrel and lip and longitudinal keys, pins, or dowels driven and secured in the barrel and lip, substantially as described.

2. The auger body or barrel and a detachable cutting lip or edge, combined with a suitable number of tenons and sockets made integral with these parts and adapted to connect them, and detachable keys, wedges, or dowels applied longitudinally and transversely to the barrel and lip, substantially as described.

3. The auger body or barrel and a detachable cutting edge or lip therefor, combined with a suitable number of tenons and sockets integral with these parts and adapted to connect them and extending transversely thereof, and wedges or keys applied to the barrel and lip or edge in suitable grooves disposed in their peripheries, substantially as described.

4. An auger provided with a longitudinal Wall or partition 0, arranged in the screw and at the upper end thereof, substantially as and for the purpose described.

In testimony whereof I have hereunto set my hand this 26th day of April, A. D. 1890.

MAURICE H. JONES.

W itnesses:

WILLIAM S. LEWIs, JOSEPH FETZER. 

